A 90-minute COVID-19 test has been shown to have over 94 per cent sensitivity, and 100 per cent specificity in a new study. The work, published in the journal The Lancet Microbe, was ledby scientists ...
Objective: To evaluate the sensitivity and specificity of a self-administered food frequency questionnaire (FFQ)—used in a cohort of 48 000 men to determine dietary supplement use. Design: ...
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